Alan Roehrich wrote:I can tell you that 260 pounds of open pressure will not break good quality studs, rockers, and pushrods. You have another very serious problem. Or you're using cheap parts.
We've run right at 400 pounds open on stock rockers.
ZIGGY wrote:I thought the man indicated he had 358 on the nose, which Alan intended to round to 360 in his post but typo'd as 260. (??)
athomp wrote:A few more details: It's a hydraulic cam with .390/.410 VALVE lift. 218/224 duration at 0.050 lift. Was intalled starght up but degreed to check. Pushrods are original factory stock. Rockers were original factory stock but I broke 4 last year so I replaced then with Summit rockers SUM-G6800. I haven't broke any of those yet but it's early in the season. Studs are Summit SUM-G1675. Springs are Summit SUM-17400. Oil pan has a kickout and the track is banked 12-15 degrees.